Moshe Benabou alleges the pop star repeatedly struck him in the chest during an altercation in October, and failed to hand over more than $400,000 in overtime and vacation payments.
He filed papers on Thursday seeking unspecified damages for assault and battery and a total of $421,261 in extra wages.
Ilan Heimanson, an attorney for Benabou, who was fired last year, tells the Associated Press, "For nearly two years Mr. Benabou devoted himself completely to ensuring Mr. Bieber's personal safety. Mr. Benabou deserved, as does any employee, to be treated with respect, dignity and in accordance with the law. Unfortunately, he was not. "
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